2019 Volume 75 Issue 2 Pages I_755-I_760
It is important to develop a quantitative evaluation and design method considering the ductility of breakwater structures tsunami external loads of tsunamis; this must be investigated from both coastal engineering and geo-engineering perspectives. For this reason, tsunami-induced failure mechanics of a breakwater structure must be clarified. The study indicates the importance of the yield surface of the bearing capacity of the seabed under the breakwater structure in the quantification of its ductility. The relationships among the vertical, horizontal, and moment loads acting on the breakwater, which lead to bearing failure, were comprehensively investigated based on the results of a finite element analysis. The bearing capacity failure of the breakwater could be predicted quantitatively and comprehensively by introducing the concept of the yield surface, even as the failure mode changes depending on the complex and various load conditions of the tsunami.
